Plug-in function to use for generation of the sitemap.
Defaults to org-publish-org-sitemap, which generates a plain list
of links to all files in the project.

:sitemap-sort-folders

Where folders should appear in the sitemap. Set this to first
(default) or last to display folders first or last,
respectively. Any other value will mix files and folders.

:sitemap-sort-files

How the files are sorted in the site map. Set this to
alphabetically (default), chronologically or
anti-chronologically. chronologically sorts the files with
older date first while anti-chronologically sorts the files with newer
date first. alphabetically sorts the files alphabetically. The date of
a file is retrieved with org-publish-find-date.

:sitemap-ignore-case

Should sorting be case-sensitive? Default nil.

:sitemap-file-entry-format

With this option one can tell how a sitemap’s entry is formatted in the
sitemap. This is a format string with some escape sequences: %t stands
for the title of the file, %a stands for the author of the file and
%d stands for the date of the file. The date is retrieved with the
org-publish-find-date function and formatted with
org-publish-sitemap-date-format. Default %t.

:sitemap-date-format

Format string for the format-time-string function that tells how
a sitemap entry’s date is to be formatted. This property bypasses
org-publish-sitemap-date-format which defaults to %Y-%m-%d.